Description
Perform answer-back for each operation with horn.
1.CHECK FUNCTION

Is the operation normal?
YES >> Inspection End.
NO >> Refer to DLK "Diagnosis Procedure".
Regarding Wiring Diagram information, refer to DLK "Wiring Diagram".
1.CHECK HORN FUNCTION
Check horn function with horn switch.
Does the horn sound?
YES >> GO TO 2
NO >> Refer to HRN "Wiring Diagram".
2.CHECK HORN RELAY POWER SUPPLY

Is the inspection result normal?
YES >> Repair or replace open harness between IPDM E/R and horn relay.
NO >> GO TO 3
3.CHECK HORN RELAY CIRCUIT


Is the inspection result normal?
YES >> GO TO 4
NO >> Repair or replace harness.
4.CHECK INTERMITTENT INCIDENT
Refer to GI "Intermittent Incident".
Is the inspection result normal?
YES >> Replace IPDM E/R. Refer to PCS "Removal and Installation".
NO >> Repair or replace the malfunctioning part.
Keyfob battery and functionDescription The following functions are available when having and carrying the keyfob. Door lock/unlock Panic mode (horn and headlamp operation) Remote control entry function and panic alarm ...

Description Performs operation method guide and warning with buzzer. ...
Additional service when replacing
ECM
Description
When replacing ECM, the following procedure must be performed.
PROGRAMMING OPERATION
NOTE:
After replacing with a blank ECM, programming is required to write ECM
information. Be sure to follow the procedure
to perform the programming.
Work Procedure
1.CHECK ECM PART NUMBER
Che ...
U0073 Communication bus a off
DTC Logic
DTC
Trouble diagnosis name
DTC detecting condition
Possible causes
U0073
Control Module Communication
Bus "A" Off
When the ignition switch is ON,
TCM detects a bus-off error
continuously for 2 seconds or
more.
Harness or connector
(CA ...